Chimney-cowl.



J. T. PROPFITT.

CHIMNEY GOWL.

APPLICATION rILnn JUNE 5, 1908.

927,072. Patented July 6, 1909.

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J. T. PROFFITT.

Patented July 6, 1909.

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UNITED STATES PATENT OFFICE.

JOHN T. PROFFITT, OF ST. DAVID, ARIZONA TERRITORY.

CHIMNEYCOWL.

To all whom it may concern:

Be it known that I, Jomv T. Pnorrrrr, a citizen of the United States,residing at St. David, in. the county of Cochise, 'llerritory ofArizona, have invented certain new and useful Improvements inUhimney-Cowls; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention relates to a chimney cowl or hood and more particularly tothe class of revoluble cowls adapted to discharge the smoke issuing fromthe chimney in the direc tion in which the wind is blowing.

The primary object of the invention is the provision of a revolving cowlor hood mounted upon the end of a stove pipe or chimney and rotatablymounted upon a spindle or shaft and having its bearing upon a supportingrib eicteriorly of the pipe or chimney.

Another object of the invention is the provision of a chimney cowl orhood revolubly mounted upon the end of a stove pipe or chimney, saidcowl or hood having its bearing at the free end of a spindle or shaftvertically disposed and supported centrally in the stove pipe orchimney, and furthermore the said cowl or hood has its lower edgebearing against a bearing rib projecting from the stove pipe or chimney.

With these and other objects in view the invention, for example,consists in the construction, combination and arrangement of parts aswill be hereinafter more fully described in detail and as illustrated inthe accompanying drawings which disclose the preferred form ofembodiment of the invention, however, changes, variations andmodifications may be made such as come properly within the scope of theclaim hereunto ap pended without departing from the spirit of theinvention.

In the drawings :Figure 1 is a side elevation of the invention. Fig. 2is a vertical sectional view thereof. Fig. 3 is a side elevation lookingfrom the rear thereof into the open mouth portion of the cowl or hood.Fig. 1 is a transverse sectional view on the line 14: of Fig. 3. Fig. 5is a slight modification of the invention.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings.

In the drawings, the numeral 6 designates Specification of LettersPatent.

Application filed June 5, 1908.

Patented July 6, 1909.

Serial N0. 436,841.

a cylindrical stove pipe or chimney within which at the upper endthereof is arranged a supporting frame 7 having cross arms or transversebars 8 and 9 at the top and bot tom respectively, the latter havingoppositely disposed right angular ears 10 secured to the stove pipe byrivets 11 while the frame 7 at the opposite side of the pipe is securedby rivets 12 thereto and centrally of the transverse bars 3 and 9 areregistering openings 13 through which freely pass a vertically disposedshaft or spindle 1 1 having at its upper extremity a reduced bearingportion 15 which projects through an opening 16 formed centrally in atransverse bar or arm 17 each end of which is bent on itself downwardlyto form a right-angular securing ear 18 which ears are fastened byrivets 19 to a revoluble cowl or hood 20.

The hood or cowl 20 comprises a semicircular body 21 having oppositeparallel side extensions 22 and the lower edge of the body 21 and aportion of the side extensions traverses and bears upon an annularbearing rib 23 formed on the stove pipe 6 near the upper open endthereof. The opposite upper edge of the body 21. has a right angularflange 24 in interlocking engagement with a securing flange 25 formed atthe outer edge of a flat top 26 which latter has a projecting portion orextension 27 disposed a distance beyond the rear or open mouth portion23 of the hood or cowl. The open mouth portion 28 of the hood or cowl isheld in the direction in which the wind is blowing by a vane 29 securedby rivets 30 to the top 26 of the said cowl or hood.

A distance removed from the transverse bar 17 is a transverse bar or arm31 having a central opening 32 through which the shaft or spindle 14passes and which bar or arm is connected to the body 21 by ri vets 33engaging the cars 34 thereof.

It is obvious that the hood or cowl 20 in revolving upon the stove pipe6 has its bearing at the top thereof on the reduced extremity 15 of thespindle and a hearing at its bottom or lower extremity by engaging andtraversing the annular bearing rib 23 as the lower edge of the body 21contacts with said annular bearing rib when the cowl or hood revolves onthe spindle so that the latter is considerably relieved of unnecessarystrain during the revolving movement of the cowl or hood effected by astrong wind.

In Fig. 5 there is shown a slight modifica-- tion and to the sideextensions 22 secured by rivets 35 is a bearing strap 36 havingengagement with the annular bearing rib 23 on the stove pipe and whichstrap produces a continuous bearing edge at the lower extremity of thecowl or hood and also prevents the outward spreading of the sideextensions 22 of the same. The reduced extremity 15 of the spindle 14 isflared or enlarged as at 37 whereby the spindle is prevented fromdisengagement in the hood and stove pipe or chimney.

What is claimed is The combination with a stove pipe having an outwardlyprojecting annular rib a distance removed from its upper edge, of aframe having centrally perforated transverse bars secured in said pipe,a hood having a vertically disposed semi-circular-shaped wallterminating in spaced parallel side extensions projecting a considerabledistance beyond the circumference of the pipe, said wall being providedwith an outwardly projecting flange at its upper edge, a top projectingbeyond the straight extensions of said wall and having an inwardlycurled marginal end engaging the flange of said wall, the lower edge ofsaid wall adapted to contact with said annular rim, centrally perforatedtransverse bars secured. within said wall, a vertically disposed spindlepassing through the perforations contained in said bars and having areduced upper extremity forming a bearing for the hood at the upper endthereof, and a vane fixed centrally to the top.

in testimony whereof, I a'l'llx my signature, in presence of twowitnesses.

JOHN T. PROFFITT.

Witnesses:

ELIAs SUMMERS, P. K. CHEsELDINE.

